Sand-drying apparatus



Nov. 11, 1930. Fg. TucK 1,731,484

` SAND DRYING APPARATUS Filed March 17, 193@ 4 Sheets-Sheet l (Wnes zie-ff Nov. 11, 1930. R. 'rUcK A SAND DRYING APPARATUS Filed March 17, 1930 4 Sheets-Sheet 2 Nov. 1l, 1930.

(mir/SEE la.v TucK 1,781,484

SAND DRYING APPARATUS Filed March 17. 1930 4 Sheets-Sheet 3 up@ 357 A?? ,M949 n g4 44 9 fnlfenfor Nov. l1, 1930. v R. TUcK v SAND DRYING APPARATUS 1930 4 Sheets-Sheet 4 Filed March 17 Patented Nov. 11, 1930 4 i revers-'res amari-Free :noemen Tuck, or nniiinnns, cienronnn SAND-hanne jnrrnnn'rus ppl-kation ledMarch 17, 1930. Serial Nom/136326.

My invention relates` to an apparatus for per 19 at a. sufficient height abovethef'loor automatically `(-:leliverin-gv .the wet or undried to permit the sand to move by gravity to any sand into the dryingportionsof the apparasu-itable depository lower than :the floor-line. tus from whence the dried sand will pass into y The hopper 19 ispreferably divided into a :Egt-he delivery end of `the apparatus and `he pair of compartments las shown in Figures 55 conveyedintoga sand screening portion and 6 and?, each compartment consisting ot the thegraded sand `and separatedportions` autoendwalls 20, 20 of the hopperithe side Valls `inatically delivered to separate containers `0r 219 2l and the linner side walls22p22. o in separate lots for use. 1 All of thewalls arearranged ataninclinal? My inVentiOILhas iiorits `object the protion so as to convergeitoward thevbottoms of Go vision of an apparatus wherebylarger quanthe co1npantments, as shown in Figures `6 .tities of sand canbe handled with pless `labor and `7. p y r @and with amore economical use -offadrying v `The wallsi-of the hopper compartments, Y medium or steam than :has heretoifore `been preferably for about two-thirdsof the dis- 15 the .caw a tance from the bottoms, are provided with a 65 My improved apparatus-is especially'rde* plurality of holes, as shown at 23, `of predesigned for use in the handling andd-ryingof `termined size `and distances apart; as `for sand and removingforeignmatterthereroin, example, holes threefourths of an inch in so as to provide a clean sand of uniform size size and approximately two inches between 20 el' `quality adapted for locomotive use and centers and covering the entire lower surface 70 "the like. ,i y i i i o ofthe hopper. The upper parts of the side The objects frand Aadvantages of' my invenwalls are left imperforate, as shown more tion will all be readily coinprehended from clearly in Figures :6' and 8, in order that the or' the detailed description of the accompanying wet sarrdeutering at the top `of -`the hopper drawings, wherein: i i i g coinpartmentsls made `to travel in the heat- 75 Figure l is -a side elevation `of `my im- .niger-drying zone'before it is permitted .to prevede-and dryer, with'a portionoasand gg'ravitate or .pass through the holes out of receiving-container .shown insection. i the drying zone. o i y Y Figure 2in a crosssect1onal detail Iot ith Each `hopper conilartment is provided at 3f sand screenen x Y bottoinwith perforated and hinged trap 80 Y Figure o 3 is` a topplan 'view ot the ap-` or drop door `241er?, siiownin Figure @which paratus. o u y i cover the entire bottoms of the hopper com- Figure l is a detail viempartially in secpartmentsL i i tion, of a shock absorbing device. The-doors Aare suitably hinged,` preferably `Figure 'is asectional elevation of thesand at the innerwends, to the intermediate `walls 85 M rhopper-s.`

fasndisclosed in the drawings, involves iarecwith portions in close proximity tothe walls 9 Nelevatingportionf l o i '22, 22,and are held in closed position in any Figure 6 .is la vertical sectional view ofthe suitable manner. The doors are provided ysanddrying hoppers. c Las a means of quickly cleaningout all sand Figrne' atop viewotthesand drying `anda-ny ii'oreign matter from the drying a y o i i zone.` p 90 Figure 4Sis zalcress-sectionalView taken i "Each compartment of the hopper is prositbstantially `oiirthe-line 8-8035 Figure 75 as vided with sand drying means comprising;` a `viewedby the arrows. f skeleton type of top header 25 `arranged adlhe rspeciliczembodiment fof theinvention i jacent the upper ends `ofthe compartments.y

itangularflifranie consisting Vyof suitable `up- `oi the compartment: The headers consist right members `l5 preferably inthe nature of suitable sized tubing `coupledtogether at of anglewbars, with `.cross-members 1G and the ends lntothe rectangular formation of 4 'bracehars as atl'` "arid, 118 the uprights l5 the compartment at top,fas shown in ,Figures D -suppentathesand receivingandudrying h'op- 6, and 8, The end `portions `oi? the top" E00 e msi header are also each shown provided with Ycouplings 26 for connectingthe intermediate f ofvheader 28 of similar construction, but of f smaller rectangular formation# 1n keeping with'the contourV at the lower ends ofthe compartments resulting from the inwardly sloping-sidewalls olf the compartments.l The Y bottom headers, like the top headers, are also provided with the` intermediate tubes 29, 29, see Figure 6, ext-endingfrom end to endend substantially parallel with the side portions.

Extending downwardly from the various legs or portions ofthe top header tothe corl ,compartments The ,dryingzona as is'ap-.

`or tubes ofthe headers, at uniformly spaced responding legs orportions 'of` thebottom header, including the intermediate portions apart'points, are' afseries ofvertically disposed tubes 30 which Connect the similar side portionsV of the headers Yand the similar interg 'mediate tubes of the two headers. Yf'

rlhis [provides ai dryingv ZoneV extending throughout.the'entirefdepth of the hopperr Vvparent fromthe structure shown-,is also Acarried through the -central mass of Ysand so. that practically all portions of the incoming is'andXwill-be brought into contacter close relation with theheated tubes." The number of tubes employed are,of-`course,in keeping Uwith the capacity ofthe hopper compartment. Y

During operation, steam, from a suitable sourcel of steamfsupplyunder pressure is let, shown at 31, into the top headers fromy whence it passes ydownwardly throughfthe vertically arranged tubes 30 and into the bottom horizontally disposed header 28V yable condenser or allowed to waste; i

which latter, -at a suitable pointjis provided with a suitable discharge` valved outlet, which mayeither discharge'into a `suit-k VSecured to the supporting frame member 15, about the bottoms Vof the drying )compartmentais a sheet metall hopper or'pan 32 y of funnel shape, as shown in Figure 1..' The funnel pan extends throughout Ythe-'width and length of the apparatus and somewhat beyond the bottom sides of thecompart f ments soas to catch all sand percolating or" made with Yaesufcient downward pitch fto j direct or cause the sand to move to a comdropping through the holes 23V in the drying compartments; the walls of the panbeing' is provided with a suitable slide door or "valve, indicated' generallyat- 33 in Figure Lf vrotating. sand screen 34.

for thel purpose of controlling the amount e or flow of sand from the funnel pan to a `at a suitable. distance therefrom.

The sand screen 34 is preferably cylindriv beneath the floor on which the introduced by means of the valve controlginpan, abouty the sidesofthe apparatus, is

providedwith an apron of light'sheet metal, Yas shown at 35, toguidethe sand discharging `from ithe 'drying hoppers into the pan therebeneath;Y the apron Vlbeing arranged parallel to the sides of the drier proper and Vcali-n shapeand of suitable mesh tok screen` orgra'dethe sand to-thedesired size.V The 'sand screen- 341s arranged `at a suitable V`inv,

clination, sloping downwardly toward the therethroughg the `screen beingprovided at suitable, points interiorlywithfthespiderY bearingras shown atf inFigure 2, so as to cause the screen fto-rotat'elwith its journal inpany suitable bearing',brackets, asiaty 37 fand at 38'in'Figure'1rdelivery end from which the coarser grains vwhich latter is rotatably secured'at its ends Y y.

Thescreen maybe rotated Tbyiany'suitablel motive v power-f;V '(not' shown) predeterminedfspeed. .i Y l. Y Mounted beneath the rotating screen Vand.

the'le'ngth of the screen, is a sheet metal fun- "adjacent thereto and disposed throughout"Y Y'nel member A39 terminating at'its lower end e Y inthe downwardly disposedV discharge tube or spout '40 which may lead into a suitabley loof receptacle or container, as at 41,l located apparatus is located.

sand drying This' sheet metal funnel member orchute 39`V is adapted to catch the screened sand coming f fromthe Screener 34 and conduct the graded san-d into the container or receptacle` 41er to any suitable tank `or sand liftV or conveyor 'which may be located therebeneath.

' Adjacent to one end of the apparatus isa pair ofvertically disposed guide members 42,

42 which may be in the ynature of "angle Y bars suitably secured at'the lower ends to the' floor onwhichtheapparatus is located and ofheight commensurate with the height of the mainportion of the apparatus, namelyso as to extend above the top of the sand drying i apparatus proper, as {shown in Figure l. These members are spaced apart, as shown in Figure 3, so as to provide a vertically dis- .posedslid'eway' for the platform 43, whose opposite sides .are provided with projecting los izo

portions adapted to straddle the slide rails 42. v The platform 43 is secured ona piston indi-` cated at 44 arranged in a suitable'cylind'er in` x of size orle'ngth topermit the piston to raise "the platform 43 `slightly above the `top of the i so Vas tospermit the receptacle46 to tilt into fsand dumping position," shown in Figure 5,

- when it reaches the upper end of its travel.

s tilting of the` receptacle.

Cir

v In thespeciiie exemplificationof the invention, `the receptacle 46, of any suitablelsize commensurate with the capacity ofthe main portion of the apparatus, is shown provided with three side walls while the end disposed toward the main portion of the apparatus is left open.` The bottom of the receptacle at opposite sides is nshown provided with V- shaped plates or downwardly disposed eXtensions 47 pivoted at their lowerinost points, at 48, to the platform, thus enabling an easy TWhat may be termed the inner or .dumping end of the receptacle 46 is provided at opposite sides with rollers 49 which rest against uand ride along on `the vertically `disposed guide rails 50 shownsecured1 to the yframe membersof the apparatus; the `guiderails 50 extend toward the top of the apparatus, where they bend inwardly over` the top of the drying chambers,

`as shown at 5l in `Figures l and 5, andthence curved outwardly to receivethe fastening or bracing portions 52and 53 whiclilattei are in turn secured to the slidewayimembers 42 and support the upper ends of the latterain place. By curving the `upper endsl of the guide rails 50 andproviding-thebracermember 52,

as shownya. closed ended slot-way 54 is `provided for the rollers 49. u

In operation, hod or, receptacle 46 is held in a horizontal positionat the inner end by the rollers 49 which bear against :rails 50; the rollers being such as toride in the slotway 54, with the result that `when the receptacle l reaches a predetermined point inlits upward CTI travel, namely where the rollers 49 reachthe end4 of slotway` 54,the `receptacle 46' is forced into a `tilting,` position toward the main portion of the apparatus. l

The sand, carried by the receptacle, l is dumped into the drying chamber or chambers. In order to maintain the receptacle 46 in horizontal position, the outer side of the platform 43 is provided with one or a pair of supporting members or rods `55 suitably cured to the platform, .as for example by means of the clamp nuts 56 `andthe.upper end of the supporting rod or rodsprovided with a receptacle engaging `head or `disc .5'2" i which may be adjustably secured on therod in order that thereceptaele 46, in conjunction 49, will be with the bearing and guide rollers held in horizontalposition.`

In orderto` protect `the hed or receptacle against shoclrfduring this upward; Atilting movement, I prefer to provide the slideway rails 42 at apoint adjacent to the initial tilting movement, `with `shock absorbing` means shown in the nature of links arranged in straddling' relation with each slideway rail 42, as shown at 58 in Figure l; the specific construction beingshown in Figure 4 as consisting of a pair of rods 59, 59 secured to the l "block 60 which `is riveted or otherwise prop-` elfly secured to the slide-rails, as shown in I4 igure l. The outer ends of therods 59 are provided with suitable head portions 61 which `maybe threaded on the ends of the rods and l faces ofthe slide-rails and therefore arranged' in the path ofextended ears or lugs 66 at opposite sides of the hod or receptacle 46. As a result, when the platform and receptacle 46 reach apredetermined point inthe upward l travehithe lugs 66 of the receptacle will engage with the U-'shaped members` `65` and cause the springs 63lto be distended and` thus prevent a sudden upward slapping movement of the receptacle; the upward tra-vel of the piston driven `platform and therefore the" movement of the rollers 49 into the upper end of the slotways 54 will force the receptacle to move into a dumping position against the pulling actions of the springs 63.

In the operation, wet sand is loaded` into the receptacle 46 and the motive power or medium is then admitted-to the cylinder 45 causingl the piston 44 to travel vertically thereby moving the loaded receptacle 46 tdward the upper end ofthe slideway; the piston travel being' such that the free end of the receptacle is forced upwardly beyond the horizontal plane of thc closed end of the slotways 54, so that the sand will dump into the drying` chamber or chambers, see Figure In the present exemplification of the invention, the apparatus is shown provi-ded with a pair of dryingchambers so arranged relative to the hoisting receptacle 46 that silibstantially equal amounts of the sand will be thrown into both chambers.

It will be understood that the heating inedium, for example steam, has previously been admitted into theupperpiping or headers 25, causing` the steam to pass into all ofthe vertically disposed tubes 30 and downwardly into the bottom piping or headers 28; the llatter being provided with a suitable drain or outlet so that hot steam willcontinuously pass through all of the tubingwhile the apparatus is in operation. The wot sand `will thus be forcedto come into Contact with and pass in s reaches the discharge openings 'or holes in the y side lwalls of the chambers as well 'as inthe @bottom vdoors-'so that-a thorough drying of l the' sand; during@ its f passage by gravity through the' chamber ori chambersV vtaires place. The dried sand will, ltherefore, all percel'atethrough the side wallsA aindlbot- Atoms of the chambers andfall into the hopper chambers or pan V dispose-d about; the bottcms of the and automatically discharge through the opening at'the lowerincst point `lesslabor thanl has heretofore been the case,

rioiis 'points adjacenttok the bottom withy small clean-.out doors,-as indicatedjat6'?.y

Inorderi that-properinspectionofthe-ap- #Y i paratus maybe had, the'supporting frainework is'alsopr'ovided withasuitable ladder Vor stairway, as at` 68,'leadiiig toa platform indicated at 69. l c

, With my iinprcved device, larger quantities of saiidcanbe handled, dried and graded with while at the same time greater economyin the c usel of steam as a `drying niedium'is obtained in the'hopper or pan into one kend of a power i operated 'screen which is preferably -of the cylindrical type and arranged atV a down ward inclination, .as shown in Figure l, so

`thatscreened sandr may'pass fronithe screen while :foreign matter and ungraded A*sand may automatically discharge from the eppo- 'site or lOWr end of the screen onto a suitable l TheY upper ends of the cylindrical screen and permit a prcper arrangement ofthe drying pipes in orderthat the'latter lmay ar!` ranged in comparatively close relation: with each othery to cause substantially all portions:

' platform or into a suitable container;

:The graded or screened dry -sand discliarges into'the funnel shaped member.` disposed about 'the lowerfside of the screen. The

vhopper ef predetermined height and dimen-V than has been'the casein devices ofthis generalcharacter as heretofore-employed.

l have shown a practical embodiment Vof my inventionv which has been described in terms employed merely asterinsjof descrip-ftion aiidnot as terms oflimitation, as modications arepossible and maybe made without, howevenf departing from vthefspiritv of my invention. Y Y n l What 'I claim isrj'V t sand drying apparatus comprising a `"sions having side walls converging toward the bottom, said walls'at a 'distance below the top ',being'provided withholes of predetermined j sizev and-at prearranged distances apart; a

perforated bottoml for "said hopper; drying means arranged in the hopper so as tohave 4screened gradedsand will be discharged byy M v "of vertically 'disposed' tubesarranged adthe chute member Y39into any suitable recepf tacle or at any preselected point beneath the floor on whichthe drying apparatus is located.

the funnel shaped member may belsecure'dto therdischarge end ofthe hopper or pan 32 in any suitable manner which will induce all of the discharging sandto enter the screen; and' substantially the same general configuration ofthe hopper and coiisistingof a plurality 'thereoff andV vertically disposed tubes karblyv rectangular in shape, as shown, so tol of the sand to come into more'or less intimate f relation withV the heatingy pipes or tubes,

The walls of the chamberor cliaii'ibers'areH made of sheetmetal, welded, riveted or otherwise properly secured together and arrangedY at a properinclination to ensure proper itation of the sand. The bottoms of theA chambers are-preferably hinged or otherwise inovably secured in place in order that a quick cleaning' out of thechambers may take place, especially of foreign mattercof size greater than the size of the perforatiohs or holes; and in order that the chambers may ben readily cleanedV out or in other words te permit access thereto, I providethe same at va ranged at intermediate peints cf the hopper;

"top and bottom headers'co'nnected to all of said tubes whereby't'he drying mediumV may circulate throughout the headers and` all of v said tubes; one of said headers having al 'controllable inlet, while the other header has a controllable outletja 'vertically disposed slideway' `arranged at oneend of the hopper;

said slideway lto travel vertically; a power driven member, arranged to travel in said s e slidetion *disposed toward the top of the hopper; means intermediate ofthe hod or receptacle and" the guideway whereby the hod `will be tilted toward the hopper vwhen the powerV n drivenmember and the rod reach the upper end' Ofthe slidewayA andthe sand thereby dumped into the hopper; a: funnel shaped Ypan beneath the hopper arranged to receive the sand discharged through the perforated side walls and the bottoni of thehoppensaid pan having a central discharge openingin its bottom ;y av power driven cylindrical screen arranged at an inclinationwithits"upper end adapted to receive the sand discharging from said pan and to deliver thenon-screened mat-v -j acent t-o lthel side walls throughoutthe height ahod or sand holding receptacle arranged in ter at its lower end; and a sloping chute member arranged about the lower side of the Vscreen adapted to receive the screenedsand and to deliver the same at a predetermined point. a.

2. A sand drying apparatus comprising a vertically disposed receptacle having side walls converging toward the bottom and provided vvith holes of predetermined size and at prearranged distances apart; a perforated movable bottom for said receptacle; a plurality of steam conveying tubes arranged vertically within the receptacle adjacent to the walls and in vertical rows at intermediate points in the receptacle; top and bottom` ranged at one side of the apparatus; and

means whereby said member is automatically moved into sand dumping position when it reaches a predetermined point in its up` ward travel.` i

3. `A sand drying apparatus comprising `a vertically disposed hopper having converging walls and a movable bottom, the walls at adistance from the top and the bottom being provided with perforations of predetermined size and spacing; vertically disposed tubes arranged in rows adjacent to the walls and at intermediate points in the hopper; piping connected to the upper ends of all of said tubes and piping connected to the lower ends of all of said tubes whereby circulation of a hot medium `through said tubes is permitted; a funnel shaped pan located beneath the hopper adapted to receive the sand discharging through the perforations and having a central discharge opening; a power driven cylindrical screen arranged at an inclination with its upper end adapted to receive the sand coming through the discharge opening in said pan, while the lower end of the screen is adapted to discharge the residue; a. sloping chute located beneath said screen adapted to convey the screened sand at a preselected point; a vertically arranged slideway adjacent to said hopper; a power driven elevating platform arranged at the bottom of the slideway; asand holding receptacle pivotally4 mounted on said platform; and means arranged at the upper end of said slideway whereby said receptacle is automatically tilted and the sand dumped into said hopper.

4. A sand drying apparatus comprising a `vertically arranged rectangular chamber open at top and having converging walls and provided with a bottom, the walls at a dis- I; tance below the top and said bottom havingV perforations of predetermined size and spac` ing; hot medium conveying tubes arranged in verticalrowsadjacent to the side and end walls of the chamber and at intermediate points in the` chamber; continuous piping connected to the upper and to the lowerends of all of said tubes; means for introducing a heating medium into the piping atone end of the tubes; a dischargein the piping at the other end; a 1dished `hopperbeneath said chamber arranged to receivethe sand `dis-K charged through the perforations in the walls and bottom of said chamber, said hopper having a dischargelopening at bottom; a power actuated screen arranged to receive the sand from the hopper discharge opening and adapted toautomatically discharge the residue; a chute arranged to receive the screened sand and toconvey the same at a preselected point; a power operated sand holding receptacle adapted to elevate sand to thetop of said chamber; and means whereby said receptacle is moved into sanddischarging position when it reachesthe top of said chamber.

15.1 A sand drying apparatus comprising a vertically disposed chamber, open at top and l the tubes so as to permit a heating medium` to flow throughout the tubes; a hopper having Vdownwardly sloping sides arranged beneathy the chamber-and provided ywith a" discharge opening at bottom; a power actuated screen arranged beneath said opening and arrlnged to discharge residue at the opposite end thereof; a chute `arranged beneath the screen to catch the screened sand and dischargeit` at a preselected point; a wet sand elevating memberarranged to travel vertically adjacent to the chamber; and means whereby said member is automatically moved into sand dumping position when the member reaches the top ofthe chamber. 6.2 A sand drying apparatus comprisinr a vertically disposed receptacle provided with converging walls whereby the receptacle is provided with a plurality of chambers; the walls at predetermined distances from the `tops `being provided with perforations of and protfidedatbottom with an outlet; a

ieu

loa

' movable sereenllliounted beneath sai'dcoi'ltletl and'` adapted todischarge 'unscreenedfmatter therefrom; a screenedsand receiving element disposed beneathfthe screen and adapted to convey thescreened sandat apreselected` point; "means :for agitating said screen Y wet sand carrying'means adapted to convey the Y sand v toward the VYtops l of.; said chambers; means for operating said-(first mentioned means; andV means arranged. alongthe path* ofthe conveyingmeans whereby the .f latterv the wet* Sand l'into 1 saidv is'caused to deliver chambers. f c 7..-fA.4 sand drying apparatus comprising vertically disposed chambers provided with 1f? v WallsV converging. toward.therbottorn;` the walls having perforations Yofv predetermined size and spacing; perforated. movable bottoms -forr the chambers; vertically disposed tubes in saidchambers'arranged in rows ad- 1 jacent to the walls andin rows intermediate Y Vof the sides; a steam introducingl pipe connected to the upperends of all of the'tubes in each, chamber.; a steam outlet pipe'conev nected to the ,lower ends of all ofthe tubes in each chamber; a hopper with slopingsides arranged Y beneath the chambers and lhaving f an, outlet ;V a` sloping' screen Varranged to ref ceive the sand romsaidoutlet andadapted toautovmatically discharge the unscreened material at a prearranged point; a chute arrangedk beneath the screen,to receive the screened sand and adapted-to discharge the same atapreselected point; power means for actuating-'the screen; a wet sand-hoistingreceptacleadapted to travel toward the upper endsof; the-chambers; means whereby the wetsand is discharged into the chambers when. the receptacle reaches a predetermined point-in itstravel and power means for Vactuating said receptacle. ,n g j 8. A sand drying apparatus comprising a vertically disposed chambelk the lwalls'andc bottom v whereof havefperforations of prede-y Y Atermined size and spacing; vertically vdisposed tubes arranged throughout said lchamber;vv means common toall of ysaid tubes and connected tothe endsY thereof for circulating a heatinginedium y through said tubes; a dried f sand receiving member larranged beneath said chamber andadapted to automatically discharge the sandlat a common point; a movable' screen-arranged beneathsaid disn charging point and adapted toautomatically i Y discharge unscreened Vmaterial at a prear ranged point; means oractuating said ,Y screen; means arranged vto f; receive the.k screenedfsand.comingfrom saidscreen andA to dischargethersame yat a preselected point; i

wet sand carryingamean's 'adapted to convey the sandte` the receiving end of the chamber and yto automatically discharge the sand into the chamber; and means litor actuating said Wet SendgonreylflgY.ineens-Y e BOSTON fresa-L;

CERTIFICATE 0F CORRECTION.

Patent No. 1,781,484.` Granted November 11, 1930, t0

ROSTON TUCK.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, line 124, claim 6, for the word "arm" read and; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 6th day of January, A. D. 1931.

M. J. Moore,

(Seal) Acting Commissioner of Patents.l 

